mei: bus: prefix device names on bus with the bus name

commit 7a2b9e6ec84588b0be65cc0ae45a65bac431496b upstream.

Add parent device name to the name of devices on bus to avoid
device names collisions for same client UUID available
from different MEI heads. Namely this prevents sysfs collision under
/sys/bus/mei/device/

In the device part leave just UUID other parameters that are
required for device matching are not required here and are
just bloating the name.

Cc: <stable@vger.kernel.org>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Link: https://lore.kernel.org/r/20191105150514.14010-1-tomas.winkler@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/misc/mei/bus.c b/drivers/misc/mei/bus.c
index 37b13bc5c16fe4b7d7ab87d6d4cc6d39b3b9ca33..8f6ab516041b471cb95a7b14515cb94c21adb8d3 100644 (file)
--- a/drivers/misc/mei/bus.c
+++ b/drivers/misc/mei/bus.c
@@ -850,15 +850,16 @@ static const struct device_type mei_cl_device_type = {
 
 /**
  * mei_cl_bus_set_name - set device name for me client device
+ *  <controller>-<client device>
+ *  Example: 0000:00:16.0-55213584-9a29-4916-badf-0fb7ed682aeb
  *
  * @cldev: me client device
  */
 static inline void mei_cl_bus_set_name(struct mei_cl_device *cldev)
 {
-       dev_set_name(&cldev->dev, "mei:%s:%pUl:%02X",
-                    cldev->name,
-                    mei_me_cl_uuid(cldev->me_cl),
-                    mei_me_cl_ver(cldev->me_cl));
+       dev_set_name(&cldev->dev, "%s-%pUl",
+                    dev_name(cldev->bus->dev),
+                    mei_me_cl_uuid(cldev->me_cl));
 }
 
 /**